Transformers: Robots In Disguise Volume 4

THE RETURN! He's back and Cybertron will never be the same! Everything Bumblebee and his Autobots have built teeters on the edge of collapse — and Starscream has to make the choice his whole life has been leading to. And meet the new Prowl — deadlier than ever, colder then any other Autobot, and ready to end the Decepticon threat!
This volume collects issues #12-16 of the regular ongoing series.